<p>Its on pg. 684.</p>
<li>The cube shown above has edges of length 2, and A and B are midpoints of two of the edges. WHat is the length of AB?</li>
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<p>I’m usually good at math, but i don’t understand this question at all?? can someone help</p>
<p>This is kind of hard to explain without drawing it out, but here goes.
Basically draw the line from A to B, then draw another line from A to the vertex of the side with point B. So you're drawing 2 lines, making two right triangles.</p>
<p>You can probably solve the rest yourself now.</p>